Power Quality Improvement Using D-statcom

This paper deals the systematic procedure of the modeling and simulationof a Distribution STATCOM (D-STATCOM) for power quality problems voltage sag, swell and harmonics based on PulseWidth Modulation (PWM) technique.A Power quality problem is an occurrence manifested as a nonstandard voltage, current or frequency that results in a failure or a mis-operation of end user equipment's. The major problems dealt here is the voltage sag, swell and harmonics. To solve this problem, custom power devices are used. One of those devices is the Distribution STATCOM (D-STATCOM), which is the most efficient and effective modern custom power device used in power distribution networks. D-STATCOM injects a current in to the system to correct the voltage sag, swell and harmonics.The control of the Voltage Source Converter (VSC) is done with the help of PWM.The proposed system is modeled and simulated using MATLAB/SIMULINK software.